/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package at.irian.web.jsf.orchestra;

import javax.servlet.*;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpServletResponseWrapper;
import java.io.IOException;

/**
 * @author Manfred Geiler
 */
public class LastRedirectRecordingFilter implements Filter
{
    public void init(FilterConfig filterConfig) throws ServletException
    {
        //do nothing
    }

    public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain) throws IOException, ServletException
    {
        filterChain.doFilter(servletRequest, new HttpServletResponseWrapper((HttpServletResponse) servletResponse)
        {
            public void sendRedirect(String s) throws IOException
            {
                LastResponseHolder holder = LastResponseHolder.getCurrentInstance();
                if (holder != null)
                {
                    holder.setRedirectUrl(s);
                }

                super.sendRedirect(s);
            }
        });
    }

    public void destroy()
    {
        //do nothing
    }
}
